Revolving tiltable chair.



M. DEXTER. BEVOLVING TILTABLE CHAIR.

AP?LIUATION FILED DEG. 8, 1909.

Patented May 3, 1910.

nimma mln |i=====iv Elftor/nega MARK DEXTER, OF KENOMI, NEBRASKA.

REVOLVING TILTABLE CHAIR.

Specification of Letters Patent.

Patented May 3, 1910.

Application filed December 6, 1909. Serial No. 531,711.

To all whom t may concern:

Be it known that I, MARK DEXTER, a citizen of the United States, residing at Kenomi, in the county ot' Sheridan and State of Nebraska, have invented a new and uset'ul Revolving Tiltable Chair; and I do hereby declare the following t0 be a full, clear, and exact description of the invention, Vsuch as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to a revolving tiltable chair, such as is used in otlices and the like.

The object of the invention is to improve and simplify the construction ot' chairs of this class.

With these and other objects in view, as will more particularly hereinafter appear, the invention consists in the novel construction and arrangement of parts hereinafter set forth, and specifically pointed out in the appended claims.

In the drawings, Figure 1 is a side elevation ot' a chair constructed in accordance with this invention. Fig. 2 is a rear View. Fig. 3 is a vertical sectional View through the post, and the uprights 7 and 8. Fig. 1 is a vertical sectional view through a portion of the central post and the support 2. Fig. 5 is a front view. Fig. (S is an enlarged detail View showing the shoulders 16, 17 and 17a.

Referring to the drawings, 1 designates the seat of a chair which is hinged to ahorizontal support 2, as at 3. The support 2 is provided with a recess 1 in which is pivotally mounted a central vertical shaft or post 5. Spaced below the support 2 is a lower support (3, which is rigidly connected with the support or member 2 by two rigid posts or uprights 7 and 8. The parts 2, G, 7 and 8 are designed to revolve around the post 5. The post 5 is supported by any suitable base 9, which rests upon the floor.

The upright 7 is provided with a thumbscrew 10, the inner end of which engages an annular recess 11 formed in upper part of the post 5. The purpose of this thumbascrew is to prevent the chair from being accidentally li'lted oil' of the post 5. Interposed between the post 5 and the upright 8 is an inclined brace 12. The brace 12 is pivot-ally connected with a block 13, as shown at 14. The block 13 is rigidly connected with the it'ront portion ot the chair seat. The brace 12 is provided with a reduced port-ion 15 on either side of which are shoulders 16 and 17, which hold said brace in engagement with the upright 8. lfVhen the chair is tilted the brace 12 is moved upward with it until the shoulder 1G engages the shoulder 17UL Yformed integrally with the upright 8. lVhen the front portion of the seat is moved downwardly, the same is limited in its downward movement by the lower end of the brace 12 striking the support (3, as will be readily umlerstoml. The seat ol the chair is held in normal position by means of a spring 18, which is connected with the member (5 and with the block 13.

It will` be seen that my invention is simple, etlicient and durable, and that the same can be lnanufactured and sold at an inexpensive price.

W'hat is claimed is:

1. In a chair, upper and lower horizontal supports a post extending through one support and partially through the other, uprights arranged on either side of said post, a brace piv'otally connected to the seat of said chair and having its lower end disposed between the post and one of said uprights, said chair being tiltable, said brace being capable of limiting the tilting action of said chair.

2. A chair of the class described having a seat pivotally mounted on a transverse support, said chair being capable of a rotary motion, a brace pivotally connected with said seat and capable ot' limiting the upward `movement ot' said seat.

2%. In a chair, upper and lower horizontal supports a post extending through one support and partially through the other, uprights arranged on either side of said post, a brace pivotally connected to the seat of said chair and having its lower end disposed between the post and one of said uprights, said chair being tiltable, said brace name to this specification in the presence of being capable ofdlimiting the tilting action tWo subscribing Witnesses. of said chair, sai 0st being provided With f an annular recess near the upper end there- MARK DEXTER' 5 of and means for engaging said recess, for /Vitnesses:

preventing the displacement of said chair. ARTHUR HANKINS,

In testimony whereof I have signed my MARK D. HOOPER. 

